https://sourceware.org/bugzilla/show_bug.cgi?id=20528
Bug ID: 20528
Summary: ld -r doesn't handle SHF_EXCLUDE section properly
Product: binutils
Version: 2.28 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
[hjl@gnu-6 exclude-1]$ cat x.s
.text
.section .text.startup,"ax",%progbits
.globl main
.type main, %function
main:
.byte 0
[hjl@gnu-6 exclude-1]$ cat y.s
.text
.section .text.startup,"axe",%progbits
.globl main1
.type main1, %function
main1:
.byte 0
[hjl@gnu-6 exclude-1]$ make LD=ld y
gcc -c -o y.o y.s
gcc -c -o x.o x.s
ld -r -o y y.o x.o
[hjl@gnu-6 exclude-1]$ readelf -SW y
There are 8 section headers, starting at offset 0x138:
Section Headers:
[Nr] Name Type Address Off Size ES Flg
Lk Inf Al
[ 0] NULL 0000000000000000 000000 000000 00
0 0 0
[ 1] .text PROGBITS 0000000000000000 000040 000000 00 AX
0 0 1
[ 2] .text.startup PROGBITS 0000000000000000 000040 000002 00 AXE
0 0 1
[ 3] .data PROGBITS 0000000000000000 000042 000000 00 WA
0 0 1
[ 4] .bss NOBITS 0000000000000000 000042 000000 00 WA
0 0 1
[ 5] .shstrtab STRTAB 0000000000000000 0000fc 00003a 00
0 0 1
[ 6] .symtab SYMTAB 0000000000000000 000048 0000a8 18
7 5 8
[ 7] .strtab STRTAB 0000000000000000 0000f0 00000c 00
0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
L (link order), O (extra OS processing required), G (group), T (TLS),
C (compressed), x (unknown), o (OS specific), E (exclude),
l (large), p (processor specific)
[hjl@gnu-6 exclude-1]$
2 different .text.startup sections are merged into one.
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